Bowl-shaped ceramic wafer polarization clamp

Abstract

The utility model belongs to the technical field of ceramic wafer polarization testing, and particularly relates to a bowl-shaped ceramic wafer polarization clamp. Comprising a tool plate; the positive electrode spring ejector rods are symmetrically assembled on the left side and the right side of the tool plate in a sliding mode, and the multiple positive electrode spring ejector rods assembled on each side are linearly distributed at intervals; and the negative electrode copper column is arranged on the tool plate and is located between the positive electrode spring ejector rods on the left side and the right side, so that the positive electrode spring ejector rods press and abut the ceramic wafer on the left side wall and the right side wall of the negative electrode copper column. According to the shape and size of a product, namely a bowl-shaped ceramic wafer, the improved clamp can lift and pull the positive electrode spring ejector rod in contact, and the probe head of the ejector rod is designed to be an arc surface, so that the clamp is attached to the cambered surface of the product, the contact area is increased, polarization failure caused by poor contact is reduced, and the clamp has the characteristics of high pressure resistance and high temperature resistance.

Description

Technical Field

[0001] The utility model belongs to the technical field of ceramic wafer polarization testing, in particular to a bowl-shaped ceramic wafer polarization fixture. Background Art

[0002] Polarization measurement of bowl-shaped or curved ceramic wafers, due to the diverse product appearance, requires a polarization and measurement temperature range from ambient temperature to 160°C, a polarization voltage range of AC500-3000V, and repeated polarization and measurement of a single ceramic wafer. This does not meet technical and production requirements. To address the bottleneck of production polarization and measurement processes and meet our company's actual needs, we began to develop a multi-zone synchronous primary polarization fixture to meet production performance testing requirements.

[0003] The existing original polarization equipment can only polarize a single area of ​​a flat wafer during operation. It is difficult to clamp fragile and thin bowl-shaped or arc-shaped piezoelectric ceramic wafers, and multiple high-temperature polarizations are required. In addition, the performance parameters after planning are not consistent and the first-time yield is low. Utility Model Content

[0004] The purpose of this utility model is to provide a bowl-shaped ceramic wafer polarization fixture. The improved fixture can pull the positive spring push rod in contact according to the size of the product. The end face of the probe side of the positive spring push rod is designed as an arc surface to ensure that it fits the arc surface of the product, increase the contact area, and reduce polarization failure caused by poor contact.

[0005] In order to solve the above technical problems, the utility model provides a bowl-shaped ceramic wafer polarization fixture, comprising:

[0006] Tooling board;

[0007] The positive spring push rods are symmetrically slidably mounted on the tooling plate on the left and right sides, and the plurality of positive spring push rods mounted on each side are linearly spaced apart.

[0008] The negative copper column is arranged on the tooling plate and is located between the positive spring push rods on the left and right sides, so that the positive spring push rods press the ceramic chip against the left and right side walls of the negative copper column.

[0009] Preferably, the tooling plate is made of polytetrafluoroethylene.

[0010] Preferably, the tooling plate includes: a bottom plate and a side plate; the side plates are symmetrically provided on the left and right sides of the top of the bottom plate, and a plurality of plug-in assembly holes are linearly opened on the side plates for slidingly assembling the positive spring top rod.

[0011] Preferably, the positive pole spring push rod comprises: a push rod body, a probe and a spring; the probe is integrally formed at one end of the push rod body, the spring is sleeved on the push rod body, one end of the spring is connected to the side plate, and the other end is connected to the probe.

[0012] Preferably, the end face of the probe close to the ceramic wafer adopts an arc surface design structure.

[0013] Preferably, the spring push rod is used to connect the high-voltage positive terminal, the negative copper column is used to connect the high-voltage negative terminal, and both the high-voltage positive terminal and the high-voltage negative terminal are connected using high-voltage and high-temperature resistant insulated wires.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The improved fixture of the utility model can lift and contact the positive spring push rod according to the size of the product, that is, the bowl-shaped ceramic wafer. The probe head of the push rod is designed with a circular arc surface to ensure that it fits the arc surface of the product, increases the contact area, reduces polarization failure caused by poor contact, and has high pressure and high temperature resistance characteristics, which meets the high-temperature polarization and measurement requirements of bowl-shaped or arc-shaped ceramic wafers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a top view of a bowl-shaped ceramic wafer polarization fixture.

[0017] Figure 2 The utility model is a side view of the assembly of a bowl-shaped ceramic wafer polarization fixture.

[0018] Figure 3 This is a schematic diagram of the high voltage input connection of the high voltage and high temperature resistant insulated wire of the utility model.

[0019] In the figure: 1- tooling plate, 11- bottom plate, 12- side plate, 2- positive pole spring push rod, 21- push rod body, 22- probe, 23- spring, 3- negative pole copper column, 4- ceramic wafer. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0021] like Figures 1 to 3 As shown, the embodiment of the present invention provides a bowl-shaped ceramic wafer polarization fixture, comprising:

[0022] Tooling board 1;

[0023] The positive spring push rods 2 are symmetrically slidably assembled on the left and right sides of the tooling plate 1, and the positive spring push rods 2 assembled on each side are linearly spaced apart.

[0024] The negative copper column 3 is arranged on the tooling plate 1 and is located between the left and right positive spring push rods 2 so that the positive spring push rods 2 press the ceramic chip 4 against the left and right side walls of the negative copper column 3 .

[0025] Preferably, the tooling plate 1 is made of polytetrafluoroethylene.

[0026] Preferably, the tooling plate 1 includes: a bottom plate 11 and side plates 12; the side plates 12 are symmetrically provided on the left and right sides of the top of the bottom plate 11, and a plurality of plug-in assembly holes are linearly opened on the side plates 12 for slidingly assembling the positive spring push rod 2.

[0027] Preferably, the positive spring push rod 2 includes: a push rod body 21, a probe 22 and a spring 23; the probe 22 is integrally formed at one end of the push rod body 21, and a spring 23 is sleeved on the push rod body 21, one end of the spring 23 is connected to the side plate 12, and the other end is connected to the probe 22.

[0028] Preferably, the end surface of the probe 22 close to the ceramic wafer 4 adopts an arc surface design structure.

[0029] Preferably, the spring 23 push rod is used to connect the high-voltage positive terminal, the negative copper column 3 is used to connect the high-voltage negative terminal, and both the high-voltage positive terminal and the high-voltage negative terminal are connected using high-voltage and high-temperature resistant insulated wires.

[0030] The utility model also includes the following usage process:

[0031] Due to the different polarization voltages of various products, before testing, ensure that the product leaks electricity during the polarization process to prevent sparking and breakdown, which will affect the performance requirements after polarization. High-voltage and high-temperature resistant insulated wires must be used, and the main body of the tooling board 1 is made of polytetrafluoroethylene material. Adjust the high-voltage output device according to the product requirements. The voltage range is DC500-3000V DC. The high-voltage positive terminal is connected to the spring 23 push rod, and the high-voltage negative terminal is connected to the negative copper pillar 3. Check whether the push rod is reliably connected to the ceramic chip 4. Check whether the push rod probe 22 contacts the chip surface. After assembling the tooling board 1, place it in a high-temperature polarization furnace or heated silicone oil to begin polarization. After polarization is completed, remove the ceramic chip 4 and repeat the above steps.

[0032] The above description is only a description of the preferred embodiment of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A bowl-shaped ceramic wafer polarization fixture, characterized in that: include: Tooling board (1); The positive pole spring push rods (2) are symmetrically slidably mounted on the tooling plate (1) on the left and right sides, and a plurality of the positive pole spring push rods (2) mounted on each side are linearly spaced apart. The negative electrode copper column (3) is arranged on the tooling plate (1) and is located between the positive electrode spring push rods (2) on the left and right sides, so that the positive electrode spring push rods (2) press the ceramic chip (4) against the left and right side walls of the negative electrode copper column (3).

2. A bowl-shaped ceramic wafer polarization fixture as claimed in claim 1, characterized in that: The tooling plate (1) is made of polytetrafluoroethylene.

3. The bowl-shaped ceramic wafer polarization fixture according to claim 1, characterized in that: The tooling plate (1) comprises: a bottom plate (11) and a side plate (12); the side plates (12) are symmetrically arranged on the left and right sides of the top of the bottom plate (11); and a plurality of plug-in assembly holes are linearly opened on the side plates (12) for slidingly assembling the positive spring top rod (2).

4. A bowl-shaped ceramic wafer polarization fixture as claimed in claim 3, characterized in that: The positive electrode spring push rod (2) comprises: a push rod body (21), a probe (22) and a spring (23); one end of the push rod body (21) is integrally provided with the probe (22); the spring (23) is sleeved on the push rod body (21); one end of the spring (23) is connected to the side plate (12), and the other end is connected to the probe (22).

5. The bowl-shaped ceramic wafer polarization fixture according to claim 4, characterized in that: The end surface of the probe (22) on the side close to the ceramic wafer (4) adopts an arc surface design structure.

6. A bowl-shaped ceramic wafer polarization fixture according to any one of claims 1 to 5, characterized in that: The spring (23) top rod is used to connect the high-voltage positive terminal, and the negative copper column (3) is used to connect the high-voltage negative terminal, and the high-voltage positive terminal and the high-voltage negative terminal are both connected using high-voltage and high-temperature resistant insulated wires.

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